Separation of Willow Tit and Marsh Tit in Britain: a review 16 November 2009 Comments Main paper These sound files accompany a paper on the separation of Willow and Marsh Tits, published in BB in November 2009: ... Read More
On the movements and survival of Woodpigeons and Stock Doves 01 January 1975 Comments Main paper ... Read More
The status of the Lesser Black-backed Gull in Hertforshire 01 January 1975 Comments Main paper ... Read More
Photographic studies of some less familiar birds: Gyr 01 January 1975 Comments Main paper ... Read More